That's very interesting..

Very creative indeed, wondering how much time that he spend for build that thing..

That's right, the biggest spider fossil ever found, but today there's many spider that bigger and still alive, maybe someday someone will find the biggest spider that ever live in this earth.

If it's really works it would be good, but it's look like something that complicated, I don't know how much old text that you can decipher with CAPTCHA, maybe if you do that, you'll find another text that dificult to read and you must Re-CAPTCHA it again and again until you never know what it is about..

haha..it's creative but uncommon..

People don't stop until they build highest building and no one can compete it, when it stop?